Re: [PATCH] invoke: RISC-V's -march doesn't take ISA strings

[Jeff Law <jeffreyalaw@gmail.com>]

On 11/7/22 11:58, Palmer Dabbelt wrote:
> The docs say we take ISA strings, but that's never really been the case:
> at a bare minimum we've required lower case strings, but there's
> generally been some subtle differences as well in things like version
> handling and such.  We talked about removing the lower case requirement
> in the last GNU toolchain meeting and we've always called other
> differences just bugs.  We don't have profile support yet, but based on
> the discussions on the RISC-V lists it looks like we're going to have
> some differences there as well.
>
> So let's just stop pretending these are ISA strings.  That's been a
> headache for years now, if we're meant to just be ISA-string-like here
> then we don't have to worry about all these long-tail ISA string parsing
> issues.
>
> Link: https://lists.riscv.org/g/sig-toolchains/message/486
>
> gcc/ChangeLog
>
> 	doc/invoke.texi (RISC-V): -march doesn't take ISA strings.

No strong opinions, mostly because I don't have any of the history.  I'm 
happy to go along with the consensus here.

jeff